Tom Ashely Soo... The reason I know about this is because I've done it... And because I'm a selfish bastard I've not reported it.
One night I was editing my Scirra page and refreshing it to see how it looked, when I see I apparently visited the site ~400 days in a row and every time I would refresh the page it would ad 2 days. I then took adva- I mean tested to see if it would work again a couple hundred times. (Look, I already said I'm a selfish bastard, ok? Let's move on)
I got five gold badges and then I got tired and went to sleep. The next day this bug stopped working and I was too scared that my account would be banned to report it. Aand because I did not want to lose the badges... (yeah...)
I think the reason why this bug happened for one night is because the Daylight Saving Time had just started for UK (Where I believe you guys are situated) but didn't start for Romania (Where I live) for two more hours (Links: UK: https://www.timeanddate.com/time/change/uk/london Ro: https://www.timeanddate.com/time/change ... /bucharest) and it would trick somehow the server to ad 2 days.
So I guess it would happen again on the 30th of October, but this time for countries west of the UK.
Also, I'm ok with you guys removing my 5 gold badges that I cheated for.
Good luck with fixing this bug!